Article
Engineering, Environmental
Ruth N. Kasavo, Madhumita Bhaumik, Hendrik G. Brink
Summary: This study investigated the efficacy of PANI-NSA/NiFe2O4 nanocomposite in removing Cr(VI) from solution. The results showed a remarkable 99.9% removal of Cr(VI) with optimal conditions, and the mechanism of removal involved electrostatic attraction, reduction, and surface complexation. The study also demonstrated the potential of PANI-NSA/NiFe2O4 for industrial applications in Cr(VI) removal.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Harit, Sakshi Gupta, Han Young Woo, Vimlesh Chandra
Summary: By introducing PANI and NiFe2O4 into Ag3PO4, a nanocomposite material with enhanced degradation efficiency for RhB dye was synthesized, showing a higher degradation rate and better recyclability compared to pristine Ag3PO4.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Leili Mohammadi, Muhammad Nadeem Zafar, Maqzia Bashir, Sajjad Hussain Sumrra, Syed Salman Shafqat, Amin Allah Zarei, Hamid Dahmardeh, Iqbal Ahmad, Mohamed Ibrahim Halawa
Summary: This study demonstrates the synthesis, characterization, and modeling of nickel ferrite nanocomposite, NiFe2O4, as an efficient adsorbent for phenol removal from aqueous environments. The optimization and modeling using central composite design showed that NFC had high phenol removal efficiency under optimal conditions. Furthermore, the Langmuir model was found to best fit the experimental data, demonstrating the effectiveness of NFC as an adsorbent for phenol contaminants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Indumathi Ilango, Raj Mohan Balakrishnan
Summary: The removal of ciprofloxacin and lomefloxacin hydrochloride in water was studied using L-Leucine functionalized nickel ferrite nanocomposite. The results showed that the nanocomposite was effective in removing low-concentrated antibiotics from wastewater under certain conditions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
R. Gamal, S. E. Rizk, N. E. El-Hefny
Summary: A magnetic chromium ferrite nanocomposite was synthesized using sonochemical method with oleic acid as a surfactant. The nanocomposite showed great potential in removing molybdenum (VI) from fission products through batch adsorption technique, with adsorption described by pseudo-second-order model and equilibrium data fit well with Langmuir and Toth models. The desorption efficiency of molybdenum ions exceeded 99% when using 1.0 mol/L NaOH, indicating the nanoadsorbent's effectiveness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Green & Sustainable Science & Technology
Hadi Hosseini, Seyyed Mohammad Mousavi
Summary: Biodegradable BC/PANI nano composite aerogels were fabricated for the removal of Cr(VI) from wastewater streams. The adsorption capacity was highest for BPDB at pH 7, with good re-adsorption efficiency. Surface diffusion was found to be the main mechanism, with BPDB showing faster adsorption rate than BPDS.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Abdelghani Hsini, Yassine Naciri, Mohamed Benafqir, Zeeshan Ajmal, Nouh Aarab, Mohamed Laabd, J. A. Navio, F. Puga, Rabah Boukherroub, Bahcine Bakiz, Abdallah Albourine
Summary: This study prepared a BTCA-PANI@ZnP nanocomposite and demonstrated its good adsorption characteristics for Cr(VI) ions. The adsorption process of the composite material followed pseudo second order and Langmuir models, indicating a spontaneous and endothermic process. The study also confirmed the potential applicability of the material as an effective alternative for the removal of Cr(VI) ions from wastewater.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Environmental Sciences
Hongying Lv, Wenxin Zhang, Maryam Hosseini, Majid Riahi Samani, Davood Toghraie
Summary: In this study, the removal of hexavalent chromium from aqueous environments was investigated using polyaniline composites with natural waste materials. The polyaniline/walnut shell charcoal/PEG composite showed the highest chromium removal efficiency of 79.22%. It also had a larger specific surface area, leading to an increase in its removal efficiency. The optimum pH and contact time for this composite were found to be 2 and 30 minutes, respectively. The maximum calculated adsorption capacity was 500 mg/g.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Luca Lohrentz, Madhumita Bhaumik, Hendrik G. Brink
Summary: In this study, a modified polyaniline nanocomposite was successfully used to remove hexavalent chromium from synthetic effluent. The optimal adsorption conditions and parameters were determined, and the adsorption mechanism and kinetics were investigated. The results showed that the nanocomposite had high adsorption capacity and efficiency for hexavalent chromium, and was minimally affected by competing ions.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Amali Herath, Claudia Reid, Felio Perez, Charles U. Pittman, Todd E. Mlsna
Summary: Biochar adsorbents, including Douglas fir biochar (DFBC) and polyaniline biochar (PANIBC) composite, have shown high efficiency in removing environmental pollutants such as Cr(VI) and nitrate. The modified biochar exhibited positive surface charge below pH 3, making it an outstanding adsorbent for Cr(VI) removal. The adsorption capacities for Cr(VI) and nitrate were found to be endothermic and thermodynamically favored, with excellent sorption capacities even in the presence of competitive ions in lake water samples.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Mohammed Ilyas Khan, Mohammed Khaloufa Almesfer, Abubakr Mustafa Elkhaleefa, Abdelfattah Aamary, Ismat Hassan Ali, Mohammed Zubair Shamim, Hamada Shoukry, Mohmmad Rehan
Summary: This study investigates the adsorption behavior of chromium (IV) ions using a novel FeCr-PANI adsorbent and successfully predicts the adsorption behavior using an artificial neural network model. The results show that process parameters such as temperature, pH, initial concentration, adsorbent dosage, and contact time have a significant influence on the adsorption process. The Langmuir isotherm model provides the best fit to the experimental data.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Anshika Goel, Tim Tim Mashangva, Anuj Garg, Sangeeta Prasher, Ajit Kumar Sharma, Deepak Kumar, P. E. Lokhande, Mukesh Kumar
Summary: The current study synthesized pure polyaniline and a ternary nanocomposite through in situ chemical oxidation polymerization. XRD analysis showed the formation of NiCo2O4/rGO/PANI, and infrared spectroscopy confirmed the presence of both polyaniline and spinel metal oxide in the nanocomposite. FESEM micrograph revealed the formation of a nanometer-sized composite, and electrochemical testing demonstrated that the ternary composite exhibited higher electrochemical activities due to various factors. However, higher doping levels of NiCo2O4/rGO degraded the properties of pure PANI.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Environmental Sciences
Sina Saeidi Varnamkhasti, Majid Riahi Samani, Davood Toghraie
Summary: Composites of PANI-leaves were synthesized and used to remove Chromium (VI) from aqueous environments. The highest percentage of Cr (VI) removal (40.3%) was achieved with the composite of cherry leaves and PANI. The synthesis conditions were further studied to enhance the removal efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
G. Gopika, Asha Sathish, K. Nithya
Summary: This study proposes a method for synthesizing a scalable hydrogel doped with graphene oxide and magnesium ferrite through direct compounding and drip emulsification. The composite hydrogel shows high efficiency in adsorbing Ni(II) and Cd(II) ions under static conditions, thanks to the synergistic involvement of graphene oxide, magnesium ferrite, and gelatin. The hydrogel exhibits stable adsorption-desorption characteristics and can be regenerated using acetic acid for up to three cycles.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Seyed Ali Hosseini, Majid Riahi Samani, Davood Toghraie
Summary: This study investigated the removal of hexavalent chromium from aqueous solution using polyaniline-amended bird feathers. The composite of polyaniline/ostrich feathers/polyethylene glycol showed the most optimal performance with higher surface area compared to other composites, demonstrating superior chromium removal efficiency. The XRD and FTIR analysis confirmed the synthesis of aniline on the composite, indicating an amorphous structure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Construction & Building Technology
N. B. Singh, B. Middendorf
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Chemistry, Physical
Subodh Barthwal, Sumit Barthwal, Bhim Singh, Nakshatra Bahadur Singh
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Review
Biochemistry & Molecular Biology
N. B. Singh, Preeti Jain, Anindita De, Richa Tomar
Summary: The age of nanomaterials has revolutionized the scientific world, with green synthesis playing a significant role in producing stable nanoparticles using plant extracts or microorganisms. This method is cost-effective, easy to scale up, and has lower contamination risks.
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Nakshatra Bahadur Singh, Md Abu Bin Hasan Susan, Mridula Guin
Summary: Water pollution has become a critical global issue due to contamination with different types of pollutants, created naturally or due to anthropogenic activities. Traditional water purification methods face challenges, but nanomaterials and nanotechnology offer a better and more cost-effective approach. However, toxicity is a major issue with conventionally synthesized nanomaterials, leading to research on green synthesis methods for safer nanomaterials in technologies like water remediation.
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
(2021)
Article
Construction & Building Technology
Raju Goyal, Vinay K. Verma, N. B. Singh
Summary: The cement industry is under significant pressure to reduce carbon dioxide emissions, which account for nearly 7% of global emissions. Supplementary cementitious materials can effectively lower these emissions, but they also have adverse effects on the performance of cement. Nanomaterials, however, can offset these adverse effects and offer additional benefits by reducing CO2 intensity.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Anupam Agarwal, Bushra Shaida, Mayuri Rastogi, Nakshatra Bahadur Singh
Summary: Food packaging plays a crucial role in food preservation and quality improvement. Biodegradable plastics are considered as environmentally friendly alternatives to non-biodegradable plastics. However, there is a lack of comprehensive information, and further research is needed to address the challenges of commercialization.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
N. B. Singh, W. B. Gurnule
MATERIALS TODAY-PROCEEDINGS
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Nakshatra B. Singh, Sunil Kumar Saxena, Mukesh Kumar, Sarita Rai
MATERIALS TODAY-PROCEEDINGS
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Meenu Kalra, Mukesh Kumar, N. B. Singh
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Fisheries
Onuegbu Chris Uzo-God, Anupam Agarwal, N. B. Singh
JOURNAL OF APPLIED AQUACULTURE
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Yadunandan Behra, N. B. Singh
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
N. B. Singh, Saroj K. Shukla, Pawan K. Tyagi
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Subodh Barthwal, Bhim Singh, Nakshatra B. Singh
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Onuegbu U. Chris, N. B. Singh, Anupam Agarwal
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
N. B. Singh, R. K. Shukla
MATERIALS TODAY-PROCEEDINGS
(2018)